Radiative filtering creates a non-universal window for broad emission line formation in AGNs because intrinsic ionizing capability rises with accretion rate while transmission falls, unifying the absence of lines in low-luminosity AGNs, LINERs, and weak-line quasars.
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Spectral monitoring indicates NGC 3786's changing-look AGN transition results from torus covering factor variations driven by Eddington ratio and accretion mode changes.
citing papers explorer
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Radiative filtering unifies broad-line phenomenology in active galactic nuclei
Radiative filtering creates a non-universal window for broad emission line formation in AGNs because intrinsic ionizing capability rises with accretion rate while transmission falls, unifying the absence of lines in low-luminosity AGNs, LINERs, and weak-line quasars.
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The Changing-look Phenomenon Accompanied by an Accretion Mode Transition in NGC 3786
Spectral monitoring indicates NGC 3786's changing-look AGN transition results from torus covering factor variations driven by Eddington ratio and accretion mode changes.